This Friday night, the Jacksonville Sheriff’s Office will be conducting a DUI inspection of vehicles (Jacksonville DUI Checkpoint). Jacksonville First Coast News reports that “the safety checkpoint will last for four hours in the 7000 block of Powers Avenue — between University and Old Kings — Friday night starting at 9:30.” Under Florida law, it is well-established that Jacksonville DUI checkpoints must have and follow sufficient guidelines. If this does not occur, the stop may be invalid (Read Florida Court Rules on DUI Checkpoint and Road Block Case and Jacksonville Roadblocks: Are DUI Checkpoints Legal?).